Alternatives to TEN Framework
5 Voice & Messaging tools you could use instead. Each one shares a way to connect with TEN Framework and overlaps on what it does. Strongest match first.
Alternatives

Vapi
APIVoice AI platform for building production phone agents. Handles real-time STT, TTS, turn-taking, and LLM orchestration.…
Verifiedby Vapi · Voice & Messaging · 5 skills · API KeyWhy Both offer API. In common: conversational, latency, real-time.

LiveKit Agents
API · CLIBuilds production realtime voice and video AI agents with WebRTC transport, turn detection, and STT/LLM/TTS pipelines.…
VerifiedOfficialby LiveKit · Voice & Messaging · 3 skills · API KeyWhy Both offer API and CLI. In common: real-time voice.

Pipecat
APIBuilds realtime voice and multimodal conversational agents in Python — orchestrates STT, LLM, and TTS pipelines with…
Verifiedby Daily · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: multimodal, real-time, voice.

Cartesia
APIDelivers ultra-low-latency text-to-speech and speech-to-text through the Sonic model family, with a voice-agent…
Verifiedby Cartesia · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: latency, voice.

Retell AI
APIBuilds, tests, deploys, and monitors natural-sounding AI voice agents with ~600ms latency for scheduling, support, and…
Verifiedby Retell AI · Voice & Messaging · API KeyWhy Both offer API. In common: real-time, voice.